Rotatable seesaw.



F. T. THEBERT.

ROTATABLE SEESAW.

APPLICATION FILED JUNEII, I917.

Piztented Jan. 22, 191&

2 SHEETSSHEET l.

v naw/Mk0: FREDERICK T THEBERT F. T. THEBERT.

' ROTATABLE SEESAW- APPLICATION FILED JUNE II, 1917. 1,254,174. Patented Jan. 22,1918.

I uuantoz FREDERICK T TH 2 SHEETS-SHEET 2.

EBERT '20 will be alternately face of the beam 19, as at 26, the lowermost links being hingedly connected to the upper face of the supporting bar 16; Pivotally mounted adjacent the ends of the beam 19 5, are the operating levers 27, which extend down through slots in the beam 19 and which \are slotted for the reception of the adjacent ends of the actuating rods 28, which are pivoted to the levers 27 as at 29. These rods 28, at their lower ends, are operatively pivoted to the hinges 30, which engage the upper link 24, to the lower link 25 on that side, in the manner illustrated in detail in Fig. 5. The upper end of each lever 27 is provided with the cross handle 31 while adjacent the lower end each lever is provided with the foot rests 32.

It will now be obvious that by oscillating the levers 27, the toggle links 24 and 25 caused to take a vertical position or' an angular position with relation to each other and that when forced into a vertical position they will lift the corresponding end of the beam 19 and when shifted to an angular position they will draw the corresponding end of the beam 19 downward. It will, of course, be understood that the levers 27 are operated in reverse directions so that, for instance, when one lever 27 is pulled toward the end of the beam 19, the other end of the lever is pushed toward the other end of the beam and vice versa'. It will'also be seen that the children riding on the beamemay use both their arms and legs for the purpose of oscillating these levers and inasmuch as the rods28 are connected to the toggle links24c and 25, a very great leverage will be secured to cause the vertical oscillation of the beam 19. [his vertical oscillation'will cause a rotation of the beam 19 around the standard 12 and thus a continuous rotary motion will be transmitted to the beam 19 as well as a vertical oscillation. v

While '1 have illustrated a particular means for securing a vertical oscillation of the beam 19, it is-to be understood that 1 do not wish to be limited to this as other means may be employed for the purpose in conjunction with the means for securing the rotation of the beam around the standard 12. It will be obvious, however, that the construction which I have devised. for the purpose of oscillating thebeam is very simpk, thoroughly efi ective and that relatively weak children may readily operate this. see saw. I c, Having described my invention, what it claim is I 1. A see saw comprising a base, a beam pivotally supported on the base, operating levers pivotally mounted upon opposite ends of the'beam, and means for causing an oscill'aftion of the beam upon an osc llation of $5; the levers including members fulcmuned Lesa-am upon the base and bearing against the beam on opposite sides of its pivotal center, said members being operatively connected to the levers.

2. A see-saw comprising a base, a beam pivotally supported upon the base, operating levers pivotally mounted upon opposite ends of the beam and extending'belowthe beam, and members causing an oscillation of the beam upon an oscillation of the levers, said members being pivoted for movement in a vertical plane and operatively bearing against the beam on opposite sides of its pivotal center, and operative connections between said levers and said members.

3. Ina see-saw base, a standard mounted thereon, a ratchet wheel mounted upon the standard and having upwardly facing teeth, a supporting member mounted upon the standard but rotatable therearound and having upwardly extending supporting braces, a pivoting member mounted upon the upper ends of said braces for oscillation therein and being disposed above and operatively connected to the standard, a beam mounted upon said pivot member for oscil- -lation and rotation therewith, means for oscillating the beam, hangers mounted on the beam. and depending therefrom toward the ratchet teeth, and pawls carried by said hangers and extending in opposite directions and operat'vely engaging the ratchet teeth.

4:. A rotatable see-saw comprising a base, a standard mounted thereon, a ratchet wheel mounted upon the standard, a supporting member rotatably mounted upon the beam and having laterally upwardly extending braces, a beam operatively supported upon said braces for oscillation plane, pawls carried by said beam and engaging the ratchet teeth to cause a rotation of the beam, the braces and the supporting member around said standard as the beam is vertically oscillated, oppositely disposed pairs of toggle links each pair being hingedly connected to each other and to the supporting member and the beam, levers pivotally mounted upon the beam, and operating rods pivotally connected and operatively connected to the toggle links, a a

5. A rotatable seesaw comprising a base, a standard mounted thereon, a ratchet wheel fixedupon the standard, a supporting member rotatably mounted upon the standard, oppositely disposed braces extending upward. from the supporting member in coir vergent relation, a pivot carried upon the upper ends of the braces engaging the standard for in a horizontal plane, said pivot to oscillate hangers depending fr metrically opposed to rotary movement a beam mounted upon and rotate therewith, m the beam and diam a vertical to said levers and operatively each other, pests piroted to the leer-4 Eng members mounted thereon, a beam "95% engaging the a 1 otally meunted upon saicl eupporting memspposi'zeiy dis e 1. l hers mr vertical movemene, levers meuntefi 'Fv'he linkspf eae '1. upon the ends of the beam, oppositely disother am we said pivebed posed pairs of toggle links each pair 20 t0 the beam and f Said suppew hingedly conneeted 539 each ofiher and t0 the ing 1embe1 piveteilv mounted adbeam and she base respectively, and GPEXEIE" jacent the m -e s '16 33532111 and pm- 121g rods pivotaily connected to the Eevers jecting iiherethro siiee atiached he and to said toggle links.

10 the outer ends 0* he. have s, feet rests In. testimony whereofi I hereunio my 25 tacked ii the lewer em s 01: flw Revers, and signature in. the presence of (CWO Witnesses.

an W93" 2 M ed 3] eonneeterl to eam FREDERICK T, lever .0131; t0 the 3mm, Witnesses: v betwee e cerz-espanmhg toggie hHkS. WALLACE H. DAeuE'm,

15 6 A see-saw cemprlsmg a base, supperi T RSTEN EGGEN. 

